provider: String,
  ) {
    val providerClass = access.findClassByName(provider)
    if (providerClass != null) {
      registerTest(access, providerClass)
    } else {
      println("Missing $provider")
    }
  }

  private fun registerJupiterClasses(access: Feature.BeforeAnalysisAccess) {
    registerStandardClass(access, "org.junit.jupiter.params.ParameterizedTestExtension")

    response = client.get("/items/foo?skip=a&limit=b")
    assert response.status_code == 422
    assert response.json() == IsDict(
        {
            "detail": [
                {
                    "type": "missing",
                    "loc": ["query", "needy"],
                    "msg": "Field required",
                    "input": None,
                },
                {
                    "type": "int_parsing",

                        .exists(settingsFile.getExists())
                        .missing(settingsFile.getMissing())
                        .location("exists", toLocation(settingsFile.getLocation("exists")))
                        .location("missing", toLocation(settingsFile.getLocation("missing")))
                        .build());
            }

    Set<MethodSignature> missing = ImmutableSortedSet.copyOf(difference(required, found));
    if (!missing.isEmpty()) {
      fail(
          rootLocaleFormat(
              "%s should hide the public static methods declared in %s: %s",
              descendant.getSimpleName(), ancestor.getSimpleName(), missing));
    }
  }

    Set<MethodSignature> missing = ImmutableSortedSet.copyOf(difference(required, found));
    if (!missing.isEmpty()) {
      fail(
          rootLocaleFormat(
              "%s should hide the public static methods declared in %s: %s",
              descendant.getSimpleName(), ancestor.getSimpleName(), missing));
    }
  }

        VLOG(1) << "Tensor " << id << " is source";
        continue;
      }
      auto missing_it = state.op_missing_tensor.find(op_id);
      if (missing_it != state.op_missing_tensor.end()) {
        missing_it->second--;
        VLOG(1) << "Op " << op_id << " missing " << missing_it->second
                << " output gradients";
        if (missing_it->second == 0) {
          op_stack.insert(op_stack.begin(), op_id);
        }

	for _, m := range metaArr {
		if m.IsValid() {
			validMeta = m
			break
		}
	}

	if !validMeta.IsValid() {
		// validMeta is invalid because all xl.meta is missing apparently
		// we should figure out if dataDirs are also missing > dataBlocks.
		dataBlocks := (len(dataErrs) + 1) / 2
		if notFoundPartsErrs > dataBlocks {
			// Not using parity to ensure that we do not delete

		},
		{
			name:       "is-not-missing",
			query:      `select * from s3object[*] as s where s.request.header['User-Agent'] is not missing`,
			wantResult: `{"request":{"uri":"/1","header":{"User-Agent":"test"}}}`,
			withJSON: `{"request":{"uri":"/1","header":{"User-Agent":"test"}}}
{"request":{"uri":"/2","header":{}}}`,
		},
		{
			name:  "is-not-missing-2",

    assert response.status_code == 422, response.text
    assert response.json() == IsDict(
        {
            "detail": [
                {
                    "type": "missing",
                    "loc": ["body", "item2"],
                    "msg": "Field required",
                    "input": None,
                }
            ]
        }
    ) | IsDict(

        @Override
        protected ActivationFile.Builder transformActivationFile_Missing(
                Supplier<? extends ActivationFile.Builder> creator,
                ActivationFile.Builder builder,
                ActivationFile target) {
            stk.push(nextFrame("missing"));
            try {
                return super.transformActivationFile_Missing(creator, builder, target);
            } finally {
                stk.pop();